摘要:
This invention is directed to compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 are each independently hydrogen or a methyl radical, with the proviso that only one of R.sub.1 and R.sub.2 is methyl radical, as well as to aromatic compositions containing said compounds and the use of such aromatic compositions to impart desired odors.
摘要:
This invention is directed to perfume compositions comprising 4,6-dioxa-5-.sub.C1-C8 -alkyl or .sub.C2-C8 -alkenyl-tricyclo[7.2.1.0.sup.2,8 ]dodec-10-enes, the use of said tricyclododecenes as an odorant, the synthesis of said tricyclododecenes, and novel tricyclododecenes.
摘要:
4(5)-acetyl-9,9-dimethyltricyclo-[4,4,0,1.sup.8,10 ]-undec-1-ene having the formula ##STR1## its synthesis, its use as a perfumery agent and as an olfactant component in perfumery compositions and as an odorant for technical products.
摘要:
4(5)-acetyl-9,9-dimethyltricyclo-[4,4,0,1.sup.8,10 ]-undec-1-ene having the formula ##STR1## its synthesis, its use as a perfumery agent and as an olfactant component in perfumery compositions and as an odorant for technical products.
摘要:
The invention is directed to a perfumery composition consisting essentially of at least one substituted 2-(1-methylbutyl)-1,3-dioxane and customary constituents and to the use of such a perfumery composition to impart a pleasant odor to a product.
摘要:
This invention is directed to terpene derivatives. More particularly, this invention relates to a mixture of isomers of the formula ##STR1## wherein R.sub.1 and R.sub.2, which are different from each other, are each methyl or isopropyl, the preparation thereof, and perfume compositions containing them.
摘要:
This invention relates to the preparation of 13-oxabicyclo[10.3.0]pentadecane. More specifically, this invention relates to a process for preparing 13-oxabicyclo[10.3.0]pentadecane which comprises the steps of:(a) reacting cyclododecanone with elemental bromine in an organic solvent to form .alpha.-bromocyclododecanone;(b) reacting .alpha.-bromocyclododecanone with malonic acid dialkyl ester and alkali metal alcoholate to form the ketodiester 2-(2-oxocyclododec-1-yl)-malonic acid dialkyl ester;(c) hydrolyzing and decarboxylating the ketodiester from step (b) to from the corresponding 2-oxocyclododec-1-yl-acetic acid in an aqueous alkaline solution;(d) purifying the product of step (c) by extraction with an organic solvent and obtaining 2-oxocyclododec-1-yl-acetic acid;(e) reacting the product of step (d) with a lower alcohol to form a corresponding ester;(f) reducing the product of step (e) with a complex metallic hydride to form 2-(2-hydroxyethyl)-cyclododecanol; and(g) heating the product of step (f) in the presence of an acid catalyst to form 13-oxabicyclo[10.3.0]pentadecane.
摘要:
This invention is directed to terpene derivatives. More particularly, this invention relates to a mixture of isomers of the formula ##STR1## wherein R.sub.1 and R.sub.2, which are different from each other, are each methyl or isopropyl, the preparation thereof, and perfume compositions containing them.
摘要:
A detergent composition containing surfactants selected from anionic, cationic, nonionic, amphoteric and zwitterionic surfactants and a builder component containing 40% to 80% by weight of amorphous alkali metal silicates and 10% to 40% by weight of alkali metal carbonates in the form of a compound, with the proviso that the alkali metal carbonate content is always greater than the alkali metal silicate content, and at most 25% by weight of water, and wherein the compound does not have a homogeneous surface nor a uniform particle size distribution.
摘要:
Cationic non-silicate layer compounds corresponding to general formula (I)Mg.sub.x Al(OH).sub.y A.sub.z. NH.sub.2 O (I)in which A represents an equivalent of a non-silicate anion, x has a value of from 1 to 5, y>z and (y+Z)=2X+3 and n is a number of 0 to 10, are used in phosphate-reduced detergents for reducing fabric incrustation.